Product Overview

The AD5421ACPZ-REEL7 is a 16-bit serial input complete loop-powered Digital-to-analog Converter (DAC) designed to meet the needs of smart transmitter manufacturers in the industrial control industry. The AD5421 includes a regulated voltage output that is used to power itself and other devices in the transmitter. This regulator provides a regulated 1.8 to 12V output voltage. The AD5421 also contains 1.22 and 2.5V references, thus eliminating the need for a discrete regulator and voltage reference. The AD5421 can be used with standard HART® FSK protocol communication circuitry without any degradation in specified performance. The high speed serial interface is capable of opera-ting at 30MHz and allows for simple connection to commonly used microprocessors and microcontrollers via a SPI-compatible, 3-wire interface. It provides 0.0015% integral nonlinearity, 0.0012% offset error and 0.0006% gain error under typical conditions.

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